private static KmlPoint ParsePoint(XmlNode xnode)
{
KmlPoint point = new KmlPoint();
if (xnode.Attributes.Count > 0)
{
point.Name = xnode.Attributes[ATTR_ID]?.FirstChild.Value;
}
foreach (XmlNode node in xnode.ChildNodes)
{
switch (node.Name.ToLower())
{
case "extrude":
if (Int32.TryParse(node.FirstChild.Value, out int ext))
{
point.Extrude = ext;
}
break;
case "altitudeMode":
if (Enum.TryParse(node.FirstChild.Value, out AltitudeMode mode))
{
point.AltMode = mode;
}
break;
case "coordinates":
{
string[] c = node.FirstChild.Value.Split(new char[] { '\n', '\r' }, StringSplitOptions.RemoveEmptyEntries);
if (c.Length > 0)
{
string[] v = c[0].Split(',').Select(y => y.Trim()).ToArray();
if (v.Length > 1)
{
if (Double.TryParse(v[0], out double lon))
{
if (Double.TryParse(v[1], out double lat))
{
if (v.Length > 2 && double.TryParse(v[2], out double alt))
{
point.Coordinates = new Coordinates(lat, lon, alt);
}
else
{
point.Coordinates = new Coordinates(lat, lon);
}
}
}
}
}
break;
}
}
}
return(point);
}
public void WritePoint(KmlPoint point)
{
try
{
if (point != null)
{
WriteStartElement("Point");
if (point.Name != null)
{
WriteAttributeString("id", point.Name);
}
WriteComment("Point Guid: " + point.CN);
if (point.Extrude != null)
{
WriteElementString("extrude", point.Extrude.ToString());
}
if (point.AltMode != null)
{
if (point.AltMode == AltitudeMode.ClampToGround || point.AltMode == AltitudeMode.RelativeToGround || point.AltMode == AltitudeMode.Absolute)
{
WriteElementString("altitudeMode", point.AltMode.ToString());
}
else
{
WriteElementString("gx:altitudeMode", point.AltMode.ToString());
}
}
WriteStartElement("coordinates");
StringBuilder sb = new StringBuilder();
sb.Append($"{point.Coordinates.Longitude},{point.Coordinates.Latitude}");
sb.Append(point.Coordinates.Altitude != null ? $",{point.Coordinates.Altitude} " : " ");
WriteValue(sb.ToString());
WriteEndElement();
//end poly
WriteEndElement();
}
}
catch (Exception ex)
{
throw new Exception("WritePoint Error: " + ex.Message);
}
}
private static Placemark ParsePlacemark(XmlNode xnode)
{
Placemark placemark = new Placemark(xnode.Attributes[ATTR_ID]?.FirstChild.Value);
foreach (XmlNode node in xnode.ChildNodes)
{
string name = node.Name.ToLower();
switch (name)
{
case "lookat": placemark.View = ParseView(node); break;
case "point":
{
KmlPoint point = ParsePoint(node);
if (point != null)
{
placemark.Points.Add(point);
}
break;
}
case "polygon":
case "linestring":
{
Polygon poly = ParsePolygon(node);
if (poly != null)
{
placemark.Polygons.Add(poly);
}
break;
}
case "multigeometry":
{
foreach (XmlNode inode in node.ChildNodes)
{
switch (inode.Name.ToLower())
{
case "point":
{
KmlPoint point = ParsePoint(node);
if (point != null)
{
placemark.Points.Add(point);
}
break;
}
case "polygon":
case "linestring":
{
Polygon poly = ParsePolygon(node);
if (poly != null)
{
placemark.Polygons.Add(poly);
}
break;
}
}
}
break;
}
default: ParseProperties(placemark, name, node); break;
}
}
return(placemark);
}
